Synonyms: VTS 1;BRN 2823276;N,N',1,3-Tetraphenyl-1,3,2,4-diazadiphosphetidine-2,4-diamine;1,3,2,4-Diazadiphosphetidine-2,4-diamine, N,N',1,3-tetraphenyl-;18440-21-6;AC1L4F3S;LS-59893;3-12-00-01126 (Beilstein Handbook Reference);1,3,2,4-Diazaphosphetidine, 2,4-dianilino-1,3-diphenyl-;1,3,2,4-Diazadiphosphetidine, 2,4-dianilino-1,3-diphenyl-;1,3,2,4-Diazadiphosphetidine, 2,4-dianilino-1,3-diphenyl- (8CI);1,3,2,4-Diazaphosphetidine, 2,4-dianilino-1,3-diphenyl- (7CI);2-N,4-N,1,3-tetraphenyl-1,3,2,4-diazadiphosphetidine-2,4-diamine